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Transcript
Types of Energy Types of Energy Kinetic Energy • Energy of motion Kinetic Energy • Depends on mass and speed Potential • Energy of position • Comes from position Mechanical Energy • The sum of potential and kinetic energy What is the GPE of a 50 N object that is at a height of 4.3 m? What is the KE of a 4,000 kg elephant running at 3 m/s? Troy has a mass of 45 kg and is going cliff diving. The cliff is 40 m high. What is his PE? Chemical • Energy stored in the molecules of a substance (a type of potential) Electrical • Energy from the movement of electrons • Another term for electricity Nuclear • Energy that comes from splitting (fission) or combining (fusion) the nuclei Radiant • Light Energy • Also known as electromagnetic energy Thermal • Heat energy Sound • Energy traveling as waves that you can hear Energy Transformations Energy Transformation • What does transform mean? – Change • What is an energy transformation? • The conversion (change) of energy from one kind to another Examples of Energy Transformations • Pe KE PE – A pendulum – A roller coaster More Examples • Chemical KE or electrical – The food you eat allows you to move – The battery in your iPod is changed into electrical energy More Examples • Electrical Sound and Light – Your alarm clock More Examples
